Window-sill.



1 G. H.- GERABRD'IS.

WINDOW SILL. APPL IOA TION FILED JUNE 26. 1909.

977,946. I Patented Dec. 6, 1910.

WITNESSES I J? INVENTOH ATTOHMEYS THE NORRIS PETER: c0., wunmarou, o. c.

' STATES TE T FFIQE.

WINDOW-SILL.

Application filed June 26, 11909.

1'0 all whom it may concern:

Be it known that I, GERARD HUBERT GE- RAERDTS, a citizen of the United. States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved "Window-Sill, of. which. the following is a full, clear, and exact description.

The invention relates to building mate rials and its object is to provide a new and improved window sill, preferably made of cement, concrete or other cementitious material, and arranged for support at the ends only, so that the middle portion is unsupported and hencethe window sill is not liable to crack in case the building settles.

Another object of the invention is to provide means for preventing rain or other water passing over the window sill from flowing onto the wall of the building.

For the purpose mentioned, the sill is formed at the ends with integral abutments built in the wall, the abutments forming between them a recess on the under side of the sill, so that the sill is unsupported between the abutments. The sill is also provided at the under side and at the portion projecting beyond the face of the wall with a longitudinally-extending groove, to cause the water to drip off the outer end of the sill without flowing onto the wall of the buildmg.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a front elevation of a port-ion of the wall of a brick building, provided with my improved sill; Fig. 2 is a perspec tive view of the sill; Fig. 3 is a similar view of the sill inverted; and Fig. a is a cross section of the sill as applied on the wall of the building.

The window sill A is preferably made of cement, concrete or other similar material, placed in a plastic condition into a suitable mold for the material to set, harden and to conform to the shape of the mold, the finished window sill being subsequently built in the wall B of the building, as shown in Fig. 1 and as hereinafter more fully described.

The body of the window sill A is provided at its ends with theintegral abutments C, C, depending from the under side of the Specification of Letters Patent.

Patented Dec. 6, 1910. Serial No. 504,506.

body and projecting above the upper face thereof, the abutment-s C, 0 being built into the wall B- in such a manner that the under faces C of the abutments C, C rest on the corresponding course of the bricks or other building material of which the wall B is made, while the bricks, for the sides of the window opening, rest on the upper faces C of the abutments C, C. By arranging the abutments C, C in the manner described, the under face of the sill appears with a recess D extending between the opening faces C, C of the abutments C, G, and as the said abutment under faces G, O rest on a course of the bricks, it is evident that the portion of the sill between the abutments C, G is unsupported, and hence if the wall B should settle at either abutment the sill settles with it at this end but is not liable to crack as it is unsupported between the abutments.

It is understood that if the sill is supported at its under portion throughout its length, and the wall settles at one end of the sill, then the latter is liable to crack.

The sill is of a width exceeding the thickness of the wall B, the inner side of the sill being approximately flush with the inner face of the wall, while the outer portion of the sill projects a desired distance beyond the outer face of the wall B. The outer projecting portion of the sill is flush at the under side E with the under faces C, C of the abutments C, C, and in the said under side E is formed a longitudinally-extending groove E, to cause the rain or other water to drip off the outer end of the sill without flowing onto the wall of the building, as will be readily understood by reference to Fig. 2.

'The inner upper face of the sill is provided with a raised portion F, extending from one abutment C to the other, and flush with the upper face C thereof, as plainly indicated in Fig. 2, so that a proper support is had for the window casing set in the window opening and resting on the sill A. The outer ends of the upper faces C of the abutments C, C terminate a distance from the outer side of the sill, that is, each face C of the abutments corresponds in width to the thickness of the wall B, as

plainly indicated in Fig. 4. The upper face G of the sill, extending between the faces C and the raised portion F, is inclined downwardly and outwardly, so that the rain water is readily drained off from the upper surface of the sill and passes down the front side thereof, to finally drop ofi at the lower end, as previously explained, the

water not being liable to flow onto the wall B, as the longitudinal groove E prevents the flow of the water 011 the under side of the projecting portion of the same.

Thesill shown and described can be readily formed in a correspondingly shaped mold, and when properly set and hardened the sill can be conveniently built in the wall of the building without danger of the sill cracking in case the building settles.

The sill shown and described can be cheaply manufactured and requires no hand work for trimming as is the case with the usual stone sills now generally used.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A window sill of plastic material comprising a. body, having on its upper face at the inner side thereof a longitudinal flat ledge provided at each end with an angular portion, the outer edge of the ledge and the angular portion being flush with the sides and ends of the sill, the upper face of the sill between the ledges sloping outwardly and downwardly, the under face of the sill having at its outer side a ledge having a flat surface and provided with alongitudinal groove, spaced apart from the outer edge and having also ledges at the ends extending to the opposite side of the sill, for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GERARD HUBERT GERAERDTS. Witnesses Tnno. Gr. Hos'rnn, PHILIP D. RoLLHAUs. 

